Bug 22684 - Repaint problem with KDE 4.3, Qt 4.5.2, and Compositing
Summary: Repaint problem with KDE 4.3, Qt 4.5.2, and Compositing
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
Depends on:
Reported: 2009-07-09 09:55 UTC by Darin McBride
Modified: 2018-06-12 19:06 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

xorg log file (83.97 KB, text/plain)
2009-07-13 10:35 UTC, Darin McBride
no flags Details

Note You need to log in before you can comment on or make changes to this bug.
Description Darin McBride 2009-07-09 09:55:55 UTC
After running with compositing on with KDE 4.3 (4.2.95 = rc1) and Qt 4.5.2 for a while, the whole screen has problems repainting.  That is, the whole screen goes black and starts repainting what seems like from the bottom of the z-order on up, with enough of a delay between them for me to notice (still taking less than a tenth of a second to run to completion, though).  What's worse is that it doesn't really complete - it leaves portions of the screen unfinished: either it's still black, or it has something from lower in the z-order painted there (perhaps only partially itself).  And then it starts the whole thing over again less than half a second later.

Turning off compositing stops this madness immediately.

I'm not sure if this is driver, xorg, Qt, or KDE, or maybe something else, but I thought I'd start here.

Radeon 3870HD, xorg-server 1.6.2, mesa 7.4.4, xf86-video-ati from git.
Comment 1 Alex Deucher 2009-07-09 09:58:15 UTC
Can you attach your xorg log and config and a screenshot of the problem?
Comment 2 Darin McBride 2009-07-13 10:35:51 UTC
Created attachment 27630 [details]
xorg log file

Here's the Xorg log file.  However, I can't get a screen shot - every time I run ksnapshot and tell it to take a snap shot, the whole screen gets painted properly and stays that way until after the snapshot is taken, no matter what the delay is.  I'll have to grab a digital camera and take a picture of the monitors, if that'll help.
Comment 3 Raúl 2010-04-20 10:04:12 UTC
Hi Darin:

If you could still reproduce it, would you be able to get a screenshot? Getting it with a camera would be meaningful as well.

Comment 4 Darin McBride 2010-04-20 14:36:11 UTC
After upgrading to xorg-server 1.7, and again now with 1.8, I'm no longer experiencing this problem.  (And now I'm on KDE 4.4, Qt 4.6.2, Mesa 7.8.1, too.)

I get a similar problem with only one window at a time, usually a konsole window, where it fails to repaint, and I see only whatever is behind it, and then typing something gets most of it back immediately.  Not sure if it's related, but it definitely is not the full blown problem I had before.
Comment 5 Adam Jackson 2018-06-12 19:06:48 UTC
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.